What an astute observation about the accounting co-op vs. what an internship would have been like. That is so true. Co-ops are just as much about figuring out what you don’t want to do as they are what you want to do. Likewise, so many people go straight to law school right out of college, then wind up at a law firm, and hate their profession.
Even if you are in a summer internship, spend some time observing the fulltime employees and talk to them. Life, once you are hired, is not going to be about hanging out with your other intern buddies. Do people work there a long time? Do they seem happy? I know they have to sell the place to the interns, but if you are observant, you can read between the lines. Not every job is going to be happiness every day, but sometimes people wind up in entire professions that are just wrong for them based on the fact that they liked classes they took in that area. Just words of wisdom from an old time who now has the benefit of hindsight.